Screening for Precancerous Lesions of Upper Gastrointestinal Tract: From the Endoscopists' Viewpoint
Figure 8
(a) Conventional white-light imaging endoscopy shows an ulcerative mass with lumen obstruction of the esophagus. (b) i-scan (SE 6+, CE 4+, TE-e) discloses reddish discoloration of the adjacent mucosa which is Lugol unstained (c), and the pathology is high-grade intraepithelial neoplasia.
